Rail motor coach connector for crimping and shielding cables

Abstract

The invention discloses a rail motor coach connector, and particularly relates to a rail motor coach connector for crimping and shielding cables, aiming at improving the problems of complicated structure, inconvenient crimping, low operability, poor shielding effect, unstable performance and unsmooth grounding of shielding layer of shielding cables of an existing connector. According to the key point, the connector comprises a plug component, a socket component and a shielding ring, wherein the plug component and the socket component comprise shielding claws and crimped shielding cables; the shielding layer of a shielding cable is coated with a stainless steel coating which is sufficiently contacted and connected with the component thereof at 360 degrees through shielding claws; the shielding ring is fixedly arranged in the socket component, and the front end of the plug component is inserted into the shielding ring and is sufficiently contacted and connected with the shielding ring after the plug component is in joint butt with the socket component; and parts, contacted with the shielding claw and the shielding ring, and the surface grounding parts of the plug component and the socket component are subjected to local conducting treatment.

Description

technical field [0001] The invention belongs to the field of standard EMUs, and relates to an EMU connector, in particular to an EMU connector mainly used for crimping shielded cables. Background technique [0002] At present, with the promotion and extensive use of shielded cables in the field of standard EMUs, we have to consider the issue of connector crimping shielded cables when selecting connectors. Most of the shielded cables are transmission lines wrapped with a metal mesh braided layer to wrap the signal cable. The metal mesh braided layer is the shielded layer of the shielded cable. Red copper or tinned copper is generally used. [0003] Theoretically speaking, a layer of metal material shielding layer on the outer surface of the cable and connector can effectively filter out unnecessary electromagnetic waves. This is also the method used by most shielding systems at present. However, for shielding systems , It is not enough to have a metal shielding layer alone, ...

AI Technical Summary

Problems solved by technology

[0003] Theoretically speaking, a layer of metal material shielding layer on the outer surface of the cable and connector can effectively filter out unnecessary electromagnetic waves. This is also the method used by most shielding systems at present. However, for shielding systems , it is not enough to have a metal shielding layer, and more importantly, the shielding layer must be completely and well grounded, so that the interference current can be effectively introduced into the ground

[0004] In the prior art, the EMU connector has a non-negligible difficulty in crimping shielded cables. Due to the harsh requirements of the shielding system for grounding, it is very easy to cause poor grounding, such as excessive grounding resistance and unbalanced grounding potential, etc., especially When the shielded cable is transmitted at high frequency, both ends need to be grounded, which is more likely to generate a potential difference on the shielding layer, and then generate a current on the metal shielding layer, causing the shielding layer to be discontinuous and destroying its integrity

At this time, the shielding layer itself has actually become the biggest source of interference, causing its performance to be far inferior to that of the unshielded system

In the field of standard EMUs, most of the EMU connectors for crimping shielded cables have complex structures, inconvenient crimping, low operability, poor shielding effect, unstable performance, and cannot well realize the shielding of shielded cables. Problems such as layer conduction and grounding

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